翻訳と辞書 Words near each other ・ Ring announcer ・ Ring armour ・ Ring Around Quartet ・ Ring Around Rosie ・ Ring Around the Bath ・ Ring Around the Moon ・ Ring Around the Sun ・ Ring Around the Sun (novel) ・ Ring Around the World ・ Ring binder ・ Ring bit ・ Ring bolt ・ Ring cairn ・ Ring Christmas Bells ・ Ring Christmas Bells (album) ・ Ring chromosome ・ Ring chromosome 14 syndrome ・ Ring chromosome 20 syndrome ・ Ring circuit ・ Ring class field ・ Ring connection ・ Ring counter ・ Ring Creek ・ Ring culture ・ Ring current ・ Ring Dem Bells ・ Ring der Delphine ・ Ring Deutscher Pfadfinderinnenverbände ・ Ring deutscher Pfadfinderverbände ・ Ring dike Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Ring chromosome ： ウィキペディア英語版 Ring chromosome A ring chromosome is a chromosome whose arms have fused together to form a ring. Ring chromosomes were first discovered by Lilian Vaughan Morgan in 1926. A ring chromosome is denoted by the symbol r in human genetics or R in Drosophila genetics. Ring chromosomes may form in cells following genetic damage by mutagens like radiation, but they may also arise spontaneously during development. ==Formation== In order for a chromosome to form a ring, both ends of the chromosome must usually be lost, enabling the arms to fuse together. However, ring formation can also occur with only one end being lost. In rare cases, the telomeres at the ends of a chromosome fuse without any disappearance of material.〔(Mitotic and meiotic behaviour of a naturally transmitted ring Y chromosome: reproductive risk evaluation ) Núria Arnedo, Carme Nogués, Mercè Bosch and Cristina Templado〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Ring chromosome」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.